作者单位:MENG Jian-rong,LI Xiao-hong(Metallurgical Department, Tangshan Vocational College of Science and Technology, Tangshan 063001, China)孟建荣,李小红(唐山科技职业技术学院冶金系,河北唐山063001)ZHANG Dan(Mechanical & Electrical Department, Tangshan Vocational College of Science and Technology ,Tangshan 053001, China)张丹(唐山科技职业技术学院机电系,河北唐山063001)WEI Huan-jun,DU Ming-shan(Technical Center of Tangshan Iron and Steel Co. Ltd. ,Tangshan 063016, China)魏焕君,杜明山(唐山钢铁股份有限公司技术中心,河北唐山063016)